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Meltdown and Spectre chip exploits: What’s the difference?

Multiple millions of computing devices worldwide are affected by two security vulnerabilities in processors, known as Meltdown and Spectre.

The fundamental flaws are present in chips manufactured by Intel, ARM and AMD, which are used in Apple, Dell, HP, Microsoft, Google, Amazon, Linux and Lenovo smartphones, computers and operating systems, among others.

Both flaws exploit a specific processor performance feature called speculative execution, but do so in slightly different ways. They also have the potential to affect data centres and devices that connect to the cloud.

There is currently no evidence anyone has abused either of the exploits.